Tray for biological tests



FIG. 1 is a top plan view of a tray for biological tests showing our newdesign;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevation thereof;

FIG. 4 is a rear elevation thereof;

FIG. 5 is a side elevation thereof;

FIG. 6 is a cross section taken on line VI -- VI of FIG. 1; and

FIG. 7 is a cross section taken on line VII -- VII of FIG. 1.

The ornamental design for a tray for biological tests, substantially asshown.